The Calibration kit is used for setting up HDP-Express, HDP-3 units.

It includes the DEQX measurement, analysis and correction software for PC and USB cable as well as a Behringer ECM8000 measurement microphone with cable.

A boom microphone stand (not supplied) is required for speaker and room measurements. Stands are typically available for under $100 from a local musical instrument supply shop.

For high-end speaker correction, the Reference calibration kit is recommended due to its high performance, higher bandwidth Earthworks microphone.